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Can I have H2 autocreate a schema in an in-memory database?
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173
Yes, H2 supports executing SQL statements when connecting. You could run a script, or just a sta...
Are types like uint32, int32, uint64, int64 defined in any stdlib header?
I often see source code using types like uint32, uint64 and I wonder if they should be defined by the programmer in the application code or if they are defined in a standard lib header.
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How to place div side by side
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375
There are many ways to do what you're asking for:
Using CSS float property:
<div sty...
Static methods in Python?
... only be used if you have to support ancient versions of Python (2.2 and 2.3)
class MyClass(object):
def the_static_method(x):
print(x)
the_static_method = staticmethod(the_static_method)
MyClass.the_static_method(2) # outputs 2
This is entirely identical to the first example (usi...
How to efficiently build a tree from a flat structure?
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123
Store IDs of the objects in a hash table mapping to the specific object. Enumerate through all t...
How do I access this object property with an illegal name?
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263
<?php
$x = new StdClass();
$x->{'todo-list'} = 'fred';
var_dump($x);
So, $object->{'to...
How to set warning level in CMake?
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mloskotmloskot
32.1k99 gold badges9494 silver badges115115 bronze badges
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Adding a user to a group in django
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juankysmithjuankysmith
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17
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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...T you won't need to specify the dtype)
In [24]: s = Series([Timestamp('20130101'),np.nan,Timestamp('20130102 9:30')],dtype='M8[ns]')
In [25]: s
Out[25]:
0 2013-01-01 00:00:00
1 NaT
2 2013-01-02 09:30:00
dtype: datetime64[ns]``
In [26]: pd.isnull(s)
Out[26]:
0 False
1 ...
How can I combine hashes in Perl?
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dreftymacdreftymac
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